Math 3

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2 questions
Math 3 Unit 3 error analysis practice
1

Which of the following is a geometric sequence?
a) 0, 2, 6, 12, 72, . . .....
b) 4, 9, 14, 19, 24, . . .....
c) 1, 3, 9, 27, 81, . ....
d) 1/2, 2/3, 3/4, 4/5, 5/6, .........

1

The nth term of a geometric sequence is


where a1 is the first term and r is the common ratio.
Identify
and r for each geometric sequence.
1, 3, 9, 27, ...
a
r =
8, 4, 2, 1, ...
a📷 =
r =
4, -16, 64, -256, ...
a📷 =
r =